Question 232317
Frank makes 16,000 per year plus a 6% commission on all sales over $30,000. He wants to make more than $22,000 this year. How many dollars in sales must he achieve to make this salary goal? 
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Let "x" be the amount of his sales.
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Inequality:

16000+ 0.06(x-30000)> 22000
Subtract 16000 from both sides
0.06(x-30000) > 6000
Multiply both sides by 100 to get:
6(x-30000) > 600000
Divide both sides by b to get
x-30000 > 100000
x = $130,000 (amount of sales he will need)
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Cheers,
Stan H.